The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ADT Corp COM 00101j106 991 28,362 SH   SOLE   0 0 28,362
AT&T Inc COM 00206r102 433 12,258 SH   SOLE   0 0 12,258
Alerus Finl Corp Com COM 01446u103 353 6,700 SH   SOLE   0 0 6,700
Alleghany Corp COM 017175100 7,682 17,534 SH   SOLE   0 0 17,534
Allergan COM 184901023 1,806 10,675 SH   SOLE   0 0 10,675
Altria Group Inc. COM 02209s103 235 5,599 SH   SOLE   0 0 5,599
BB&T Corp COM 054937107 230 5,827 SH   SOLE   0 0 5,827
Bank Of Amer Corp COM 060505104 1,229 79,959 SH   SOLE   0 0 79,959
Becton Dickinson & Co Com COM 758871099 4,889 41,330 SH   SOLE   0 0 41,330
Bed Bath & Beyond Inc Com COM 075896100 5,889 102,640 SH   SOLE   0 0 102,640
Berkshire Hathaway Inc-Cl A COM 846701084 570 3 SH   SOLE   0 0 3
Berkshire Hathaway Inc-Cl B COM 084670702 19,534 154,345 SH   SOLE   0 0 154,345
Boston Properties COM 101121101 284 2,400 SH   SOLE   0 0 2,400
Chevrontexaco Corp Com COM 166764100 443 3,390 SH   SOLE   0 0 3,390
Chubb Corp COM 171232101 369 4,000 SH   SOLE   0 0 4,000
Coca-Cola Corp COM 191216100 6,713 158,473 SH   SOLE   0 0 158,473
Corning Inc Com COM 219350105 3,029 137,973 SH   SOLE   0 0 137,973
Costco Wholesale Corp COM 22160k105 245 2,126 SH   SOLE   0 0 2,126
Covidien PLC COM g2554f113 8,030 89,048 SH   SOLE   0 0 89,048
Dover Corp Com COM 260003108 4,510 49,583 SH   SOLE   0 0 49,583
Dover Motorsports Inc COM 260174107 188 64,969 SH   SOLE   0 0 64,969
Exxon Mobil Corp COM 30231g102 8,655 85,969 SH   SOLE   0 0 85,969
Federal Realty Invt Tr Sbi-New COM 313747206 302 2,500 SH   SOLE   0 0 2,500
First Natl Bk Alaska Com COM 32212j106 402 231 SH   SOLE   0 0 231
General Electric Corp COM 369604103 572 21,779 SH   SOLE   0 0 21,779
Genuine Parts Co Com COM 372460105 5,245 59,740 SH   SOLE   0 0 59,740
Glaxo Holdings Plc COM 37733w105 1,969 36,815 SH   SOLE   0 0 36,815
Graham Holdings Co COM 384637104 3,188 4,440 SH   SOLE   0 0 4,440
Hasbro Inc Com COM 418056107 4,958 93,464 SH   SOLE   0 0 93,464
Honeywell Intl Inc COM 438516106 279 3,000 SH   SOLE   0 0 3,000
IShares Tr MSCI Eafe Idx COM 464287465 271 3,965 SH   SOLE   0 0 3,965
International Business Machine COM 459200101 528 2,912 SH   SOLE   0 0 2,912
International Speedway Cl A COM 460335201 1,050 31,565 SH   SOLE   0 0 31,565
J P Morgan Chase And Co COM 46625h100 443 7,684 SH   SOLE   0 0 7,684
Johnson & Johnson COM 478160104 11,969 114,401 SH   SOLE   0 0 114,401
Knowles Corp Com COM 49926d109 808 26,282 SH   SOLE   0 0 26,282
Leucadia National Corp COM 527288104 7,716 294,293 SH   SOLE   0 0 294,293
Loews Corp COM 540424108 6,842 155,469 SH   SOLE   0 0 155,469
Markel Corp Com COM 570535104 15,596 23,788 SH   SOLE   0 0 23,788
Marsh & McLennan Cos Com COM 571748102 3,332 64,301 SH   SOLE   0 0 64,301
McCormick & Co Inc Com Non Vtg COM 579780206 4,149 57,952 SH   SOLE   0 0 57,952
Microsoft Corp Com COM 594918104 7,178 172,142 SH   SOLE   0 0 172,142
Nestle Sa-Adr Repstg COM 641069406 1,196 15,400 SH   SOLE   0 0 15,400
Norfolk Southern Corp COM 655844108 8,639 83,851 SH   SOLE   0 0 83,851
Paychex Inc COM 704326107 4,628 111,366 SH   SOLE   0 0 111,366
Pentair Ltd COM g7s00t104 1,232 17,083 SH   SOLE   0 0 17,083
Pepsico Inc COM 713448108 5,565 62,295 SH   SOLE   0 0 62,295
Pfizer Inc Com COM 717081103 666 22,429 SH   SOLE   0 0 22,429
Philip Morris Intl Inc Com COM 718172109 388 4,605 SH   SOLE   0 0 4,605
Procter & Gamble Co COM 742718109 5,697 72,495 SH   SOLE   0 0 72,495
Progressive Corp Ohio Com COM 743315103 5,743 226,466 SH   SOLE   0 0 226,466
Royal Dutch Shell Plc Adr Cl A COM 780257804 527 6,400 SH   SOLE   0 0 6,400
Sandy Spring Bancorp Com COM 800363103 3,640 146,123 SH   SOLE   0 0 146,123
Santa Fe Pacific Gold Corp COM 78463v107 227 1,772 SH   SOLE   0 0 1,772
Target Corp Com COM 87612e106 1,630 28,125 SH   SOLE   0 0 28,125
Teva Pharmaceutical Inds Adr COM 881624209 283 5,400 SH   SOLE   0 0 5,400
Thermoenergy Corp Com COM 883906406 0 25,000 SH   SOLE   0 0 25,000
Tyco Intl Ltd New Com COM h89128104 2,485 54,486 SH   SOLE   0 0 54,486
Verizon Communications Com COM 92343v104 397 8,106 SH   SOLE   0 0 8,106
Wal Mart Stores Inc Com COM 931142103 10,525 140,207 SH   SOLE   0 0 140,207
Walgreen Co COM 931422109 9,857 132,976 SH   SOLE   0 0 132,976
Walt Disney Holding Co COM 254687106 4,902 57,170 SH   SOLE   0 0 57,170
Washington Real Estate Inv Tr COM 939653101 377 14,503 SH   SOLE   0 0 14,503
Wells Fargo & Co COM 949746101 5,508 104,801 SH   SOLE   0 0 104,801
Source Capital Inc COM 836144105 389 5,564 SH   SOLE   0 0 5,564